A LEADING theory that the Covid pandemic originated from a lab leak in China cannot be ruled out, the World Health ...

A group of experts investigating Covid origins on behalf of the World Health Organization revealed they still aren't sure how ...

Trump’s new COVID-19 website features five arguments supporting the lab. Among them was the explanation that Wuhan – the Chinese city where the virus first began spreading – is home to a ...

The spike protein of the coronavirus, or SARS-CoV-2, binds to ACE2, a receptor on the host cells, which allows the virus to enter the cells and infect it. Binding is the first step for infection, and ...

SARS-CoV-2 is a positive-sense single-stranded RNA virus. It is contagious in humans and is the cause of the coronavirus disease 2019 (COVID-19). Vaccination-induced antibody responses wane, but ...